CN217042500U - Raw material fixed-ratio feeding structure of chlorine dioxide preparation device for drinking water disinfection - Google Patents
Raw material fixed-ratio feeding structure of chlorine dioxide preparation device for drinking water disinfection Download PDFInfo
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- CN217042500U CN217042500U CN202220840602.8U CN202220840602U CN217042500U CN 217042500 U CN217042500 U CN 217042500U CN 202220840602 U CN202220840602 U CN 202220840602U CN 217042500 U CN217042500 U CN 217042500U
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Abstract
The utility model discloses a raw material fixed-ratio adding structure of a chlorine dioxide preparation device for drinking water disinfection, which comprises a raw material A adding unit, a raw material B adding unit, a reaction kettle and a control device, wherein the raw material A adding unit and the raw material B adding unit respectively comprise a raw material barrel, a connecting pipeline and a metering pump; raw materials bucket is airtight structure, is provided with the level gauge that is used for the raw materials liquid level in the raw materials bucket of real-time detection on it, and the level gauge on two raw materials buckets constitutes raw materials A with the contrast feedback device of raw materials B actual input volume gives signal transmission for controlling means, controlling means controls two the work of metering pump. The utility model discloses a set up the level gauge in former storage bucket to utilize the actual output quantity of level gauge feedback raw materials, make controlling means can compare the actual output quantity of two kinds of raw materials in real time, and adjust the actual output of two kinds of raw materials to setting for the proportion through the measuring pump, thereby guaranteed that the scaling of two kinds of raw materials is thrown and add, and directly utilize the liquid level change to reflect the actual output quantity of raw materials, make the data of feeding back true and reliable.
Description
Technical Field
The utility model relates to a structure is thrown to raw materials scaling of chlorine dioxide preparation facilities for drinking water disinfection.
Background
In order to prevent the pollution of pathogenic microorganisms such as viruses, bacteria, pathogens, protozoon and the like to drinking water and ensure the water supply safety, the disinfection becomes an important link of the water supply treatment process.
In the past, chlorine disinfection has been widely used in water treatment processes, but since Trihalomethanes (THMs), haloacetic acids (HAAS), etc., which are byproducts of chlorine disinfection, are all "causing" substances (cancer, teratogenicity, and mutagenicity), people have begun to limit the content of Disinfection Byproducts (DBPs), even prohibited from using liquid chlorine disinfection. Chlorine dioxide, as an excellent disinfectant, has not only broad-spectrum bactericidal activity and better disinfecting effect on drinking water than liquid chlorine, but also no harmful halogenated organic substances are generated in the process of purifying water, and thus, chlorine dioxide is considered as an ideal disinfectant capable of replacing liquid chlorine.
The existing preparation of chlorine dioxide mainly comprises three methods: chlorate, chlorite and electrolysis, the chlorate method uses more than sodium chlorate + hydrochloric acid, i.e.: the chlorite process produces chlorine dioxide by using aqueous sodium chlorite solution and hydrochloric acid as material and through reaction. For the sodium chlorate + hydrochloric acid method and the sodium chlorite + hydrochloric acid method, because two raw materials are used for producing chlorine dioxide through reaction, the chlorine dioxide preparation device adopting the two methods comprises a feeding unit and a reaction kettle of the two raw materials, and in order to enable the two raw materials to react according to the expected reaction, the feeding unit of the two raw materials adopts a metering pump to convey the raw materials so as to ensure that the two raw materials are fed according to the set amount and the set proportion. However, because the flow of the raw material adding unit is very small, the inner diameter of a used pipeline is usually only 3-6mm, the specification of a selected metering pump is very small, a small amount of solid impurities sometimes exist in the raw materials, crystallization can slowly occur in a flow channel for conveying the aqueous solution of sodium chlorate and the aqueous solution of sodium chlorite, bubbles can sometimes occur in a pipeline for conveying hydrochloric acid, and the conveying resistance of the raw materials can be increased and even the flow channel is blocked to prevent the normal adding of the raw materials no matter the solid impurities are sucked into the flow channel or the crystallization or bubbles occur in the flow channel, so that the conventional raw material adding unit has the problems that the adding amount of the raw materials can often fluctuate and the two raw materials are difficult to accurately proportionally add.
Aiming at the problem that the adding proportion of raw materials fluctuates, although a high-end metering pump with output flow feedback is adopted, the price of the high-end metering pump is several times that of a common metering pump, the cost of a chlorine dioxide preparation device is greatly increased, and the complex structure of the high-end metering pump is difficult to work stably for a long time under the working conditions.
SUMMERY OF THE UTILITY MODEL
Demand to prior art existence, the utility model aims to provide a can guarantee under current service conditions that the raw materials is thrown according to setting for the proportion and is thrown, can stabilize the drinking water disinfection of work again and throw with chlorine dioxide preparation facilities's raw materials scaling throwing structure for a long time.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
a raw material fixed-ratio feeding structure of a chlorine dioxide preparation device for drinking water disinfection comprises a raw material A feeding unit, a raw material B feeding unit, a reaction kettle and a control device, wherein the raw material A feeding unit and the raw material B feeding unit respectively comprise raw material barrels, connecting pipelines and metering pumps, the metering pumps suck raw materials in the raw material barrels of the feeding unit through the connecting pipelines and feed the raw materials into the reaction kettle, and the two raw material barrels are respectively used for containing the raw materials A and the raw materials B; raw materials bucket is airtight structure, is provided with the level gauge that is used for the raw materials liquid level in the raw materials bucket of real-time detection on it, and the level gauge on two raw materials buckets constitutes raw materials A with the contrast feedback device of raw materials B actual input volume gives signal transmission for controlling means, controlling means controls two the work of metering pump.
Furthermore, a one-way air inlet valve is further arranged on the raw material barrel and used for balancing the internal pressure and the external pressure of the raw material barrel.
Further, the metering pump is a diaphragm metering pump.
Further, the liquid level meter is an ultrasonic liquid level meter or a floating ball type liquid level meter.
Further, the capacity of the raw material barrel is 100 liters.
Further, the raw material A is a sodium chlorate aqueous solution or a sodium chlorite aqueous solution, and the raw material B is hydrochloric acid.
The utility model discloses a set up the level gauge in raw materials bucket, and utilize the actual output quantity of level gauge feedback raw materials, make controlling means can compare the actual output quantity of two kinds of raw materials in real time, and adjust the actual output of two kinds of raw materials to setting for the proportion through the measuring pump, thereby the scaling of having guaranteed two kinds of raw materials is thrown and is thrown, and directly utilize the liquid level change to reflect the actual output quantity of raw materials, not only make the data of feeding back really reliable, furthermore, the succinct of structure has been kept, the adaptability of equipment to operational environment has been improved, make equipment can be long-term, work in relatively crude environment steadily.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 former storage bucket one, 2 former storage bucket two, 3 reation kettle, 4 measuring pump one, 5 measuring pump two, 6 floater formula level gauge, 6.1 level gauge body of rod, 6.2 level gauge floater, 7 one-way admission valves, 8 raw materials bung.
Detailed Description
The present invention will be described with reference to the following examples.
Fig. 1 shows an example of a constant-ratio raw material feeding structure of the chlorine dioxide preparation device for drinking water disinfection of the present invention.
As shown in the figure, the raw material proportion adding structure of the chlorine dioxide preparation device in this example comprises a reaction kettle 3, a raw material a adding unit positioned at the left side of the reaction kettle 3, a raw material B adding unit positioned at the right side of the reaction kettle 3, and a control device (not shown in the figure); the raw material A adding unit comprises a raw material barrel 1, a metering pump 4 and connecting pipelines at the upper and lower streams of the metering pump, a liquid suction pipeline at the inlet side of the metering pump 4 is inserted into the raw material barrel 1, the raw material A is contained in the raw material barrel 1, the metering pump 4 sucks the raw material A in the raw material barrel 1 and conveys the raw material A to the reaction kettle 3 along the direction indicated by an arrow at the left side in the upper part of the figure, the raw material barrel 1 is of a closed structure, a floating ball type liquid level meter 6 is inserted into the top wall of the raw material barrel 1, a floating ball type liquid level meter 6.2 floats on the liquid level of the raw material A and moves along the liquid level meter rod 6.1 along with the lifting of the liquid level, a one-way air inlet valve 7 and a raw material barrel cover 8 are further arranged on the top wall of the raw material barrel 1, the liquid level meter 6 is used for detecting the liquid level of the raw material A in real time and transmitting a detection signal to the control device, when the liquid level of the raw material A descends, external air enters the raw material barrel I1 through the one-way air inlet valve 7 so as to keep the internal pressure and the external pressure of the raw material barrel I1 balanced; the structure of the raw material B adding unit is the same as that of the raw material A adding unit, the shape and the specification of the raw material barrel II 2 are the same as those of the raw material barrel I1, and the metering pump II 5 sucks the raw material B in the raw material barrel II 2 and conveys the raw material B to the reaction kettle 3 along the direction indicated by the arrow on the upper right side in the figure; the control device controls the first metering pump 4 and the second metering pump 5 to work, and adjusts the working frequency of the first metering pump 4 and the second metering pump 5 according to the feedback of the two liquid level meters 6, so that the raw materials A and B are added into the reaction kettle 3 according to a set proportion.
The capacity of the raw material barrel is 100 liters, wherein the raw material A in the raw material barrel I1 is a sodium chlorite aqueous solution with the concentration of 8%, the raw material B in the raw material barrel II 2 is hydrochloric acid with the concentration of 9%, and the metering pump I4 and the metering pump II 5 adopt diaphragm metering pumps.
When the device works, firstly, a sodium chlorite aqueous solution and hydrochloric acid are respectively added into two raw material barrels, then the dosage of chlorine dioxide is determined according to the condition of drinking water, the dosage of the sodium chlorite and the hydrochloric acid is calculated according to the dosage of the chlorine dioxide, the working frequencies of a first metering pump 4 and a second metering pump 5 are set through a control device according to the dosage, then, the two metering pumps are started, the sodium chlorite aqueous solution and the hydrochloric acid are added into a reaction kettle 3 according to the set proportion and the set dosage, and the required chlorine dioxide is generated through reaction in the reaction kettle 3.
In the working process, along with the pumping of the first metering pump 4 and the second metering pump 5, the two liquidometers 6 respectively detect the liquid levels of the raw materials in the first raw material barrel 1 and the second raw material barrel 2 in real time, and transmit the detected liquid level values to the control device, the control device converts the real-time variable quantity of the liquid levels of the raw materials in the two raw material barrels into the actual output quantities of the sodium chlorite aqueous solution and the hydrochloric acid and compares the actual output quantities, when the actual output proportion of the sodium chlorite aqueous solution and the hydrochloric acid does not accord with the set proportion, for example, when the actual output quantity of the sodium chlorite aqueous solution is lower than the quantity required by the set proportion, the control device increases the working frequency of the metering pump 4 to increase the flow of the metering pump 4, so that the two raw materials are fed into the reaction kettle 3 according to the set proportion, and certainly, under the condition that the quantity generated by the reaction in the reaction kettle 3 is within the allowable fluctuation range of the required dosage, the control device can also reduce the flow rate of the metering pump by reducing the working frequency of the metering pump corresponding to the raw material with high actual output quantity, so that the two raw materials are added according to a set proportion.
The addition according to the set proportion is the premise of ensuring the rapid and sufficient reaction and the conversion rate of the chlorine dioxide of the two raw materials, and particularly, under the condition that the chlorine dioxide generated by the reaction in the reaction kettle and the reaction residual liquid are output together in the form of disinfectant, the two raw materials are ensured to be added according to the set proportion, so that the situation that excessive chlorite ions or excessive hydrochloric acid enter the disinfectant and bring potential safety hazards to the subsequent use of the disinfectant can be avoided.
In addition, the liquid level meter in the above example is a floating ball type liquid level meter, and the metering pump is a diaphragm type metering pump, and besides, various suitable liquid level meters such as an ultrasonic liquid level meter and various known suitable metering pumps may be used.
Finally, it should be pointed out that the technical solution claimed by the present invention can also have various other embodiments that can be made by those skilled in the art, besides the above examples, which are only used for illustration and do not limit the scope of the present invention.
Claims (7)
1. A raw material fixed-ratio feeding structure of a chlorine dioxide preparation device for drinking water disinfection is characterized by comprising a raw material A feeding unit, a raw material B feeding unit, a reaction kettle and a control device, wherein the raw material A feeding unit and the raw material B feeding unit respectively comprise raw material barrels, connecting pipelines and metering pumps, the metering pumps suck raw materials in the raw material barrels of the feeding unit through the connecting pipelines and feed the raw materials into the reaction kettle, and the two raw material barrels are respectively used for containing the raw materials A and the raw materials B; raw materials bucket is airtight structure, is provided with the level gauge that is used for the raw materials liquid level in the raw materials bucket of real-time detection on it, and the level gauge on two raw materials buckets constitutes raw materials A with the contrast feedback device of raw materials B actual input volume gives signal transmission for controlling means, controlling means controls two the work of metering pump.
2. The fixed-proportion adding structure of raw materials as claimed in claim 1, wherein a one-way air inlet valve is further provided on the raw material barrel for balancing the internal and external pressures of the raw material barrel.
3. The raw material proportioning feeding structure of claim 1, wherein the metering pump is a diaphragm metering pump.
4. The raw material proportioning feeding structure of claim 1, wherein the liquid level meter is an ultrasonic liquid level meter or a floating ball type liquid level meter.
5. The raw material fixed-ratio dosing structure of claim 1, wherein the raw material barrel has a capacity of 100 liters.
6. The raw material proportioning and feeding structure of claim 1, wherein the raw material A is an aqueous sodium chlorate solution or an aqueous sodium chlorite solution, and the raw material B is hydrochloric acid.
7. The raw material fixed-ratio feeding structure as claimed in claim 1, wherein the raw material A is a sodium chlorite aqueous solution with a concentration of 7% -8%, and the raw material B is hydrochloric acid with a concentration of 8% -9%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220840602.8U CN217042500U (en) | 2022-04-13 | 2022-04-13 | Raw material fixed-ratio feeding structure of chlorine dioxide preparation device for drinking water disinfection |
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| CN202220840602.8U CN217042500U (en) | 2022-04-13 | 2022-04-13 | Raw material fixed-ratio feeding structure of chlorine dioxide preparation device for drinking water disinfection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588843A (en) * | 2022-04-13 | 2022-06-07 | 北京天绿恒力科技有限公司 | Chlorine dioxide preparation device for drinking water disinfection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588843A (en) * | 2022-04-13 | 2022-06-07 | 北京天绿恒力科技有限公司 | Chlorine dioxide preparation device for drinking water disinfection |
| CN114588843B (en) * | 2022-04-13 | 2024-05-03 | 北京天绿恒力科技有限公司 | Chlorine dioxide preparation device for drinking water disinfection |
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